JP6564738B2 - Drawing creating apparatus and drawing creating method - Google Patents

Description

  The present invention relates to a drawing creation apparatus and a drawing creation method, and more particularly to a technique for easily creating a drawing of a floor slab such as a bridge.

  Social infrastructure structures such as bridges need to be inspected regularly. At the time of inspection of the bridge, drawings such as a blueprint for the bridge are necessary. However, there are cases where the drawings are scattered on old bridges. Even if drawings exist, the shape and size of the bridge may be inaccurate.

  If the floor slab drawing is inaccurate or does not exist, it will hinder the creation of the floor slab inspection report. In addition, a problem occurs due to movement of an automatic photographing robot for photographing a floor slab.

  Patent Document 1 discloses a registration unit for registering a structural parameter of a structure and a photograph of the structure, a 3D model creating unit for creating a 3D (three-dimensional) model of the structure using the structural parameter, and a 3D model. There is disclosed a structure management drawing creation device including a 3D model reconstructing unit that updates a member dimension of a 3D model using a photographed photograph and reconstructs a 3D model using the updated member dimension.

  In the structure management drawing creation apparatus described in Patent Document 1, the registration unit registers the structure parameters of the 3D model of the structure. For example, when the structure is a bridge, the bridge 3D model is composed of a 3D model of each member such as a column, a vertical beam, a horizontal beam, and a floor slab, and the size and arrangement relationship (interval) of each member is determined by the registration unit. Structure parameters are entered (registered). The 3D model creation unit creates an initial 3D model of the structure from the registered structure parameters. The 3D model reconstruction unit updates the member dimensions of the initial 3D model using a photograph of the structure. Here, the photograph of the structure is a stereo photograph, and by pointing the both ends of the member with a mouse cursor on the photograph, the position of the designated two points is automatically searched to measure the member dimensions, The member dimensions of the initial 3D model are updated with the measured member dimensions, and the 3D model is reconstructed.

  In addition, when reconstructing a 3D model using a photograph, the 3D model reconstruction unit automatically considers the relationship with other members adjacent to the update target member, and automatically positions and dimensions of the other members. To 3D model and reconstruct it.

JP 2011-192270 A

  Although Patent Document 1 describes that the member dimensions of the bridge 3D model (initial 3D model) are updated using a photograph taken by photographing the bridge, the photograph used here is the both ends of the member in the photograph. By specifying these two points, the photograph is limited to a stereo photograph capable of measuring the dimension of the designated member.

  Further, in Patent Document 1, when reconstructing a 3D model using a photograph, taking into account the relationship with other members adjacent to the update target member, and updating the dimensions of a certain member, There is a description that the positions and dimensions of adjacent members that are affected by the update of dimensions are also automatically updated and the 3D model is deformed. However, if the 3D model can be correctly deformed to match the actual structure, Is not limited.

  For example, in paragraph [0064] and FIG. 18 of Patent Document 1, when the dimensions of two members are updated, various members adjacent to these members are automatically deformed to form a rectangular bridge floor slab. Although there is a description that the shape of the part is changed to a rectangular shape (trapezoid), the updated floor slab part even if the dimensions of the two members (dimensions corresponding to two adjacent sides of the floor slab part rectangle) are updated Since the shape of is not uniquely determined, the 3D model cannot be deformed correctly.

  That is, even if the dimensions of each member of the structure are updated to the correct dimensions using the photograph, the 3D model of the structure cannot be correctly reconstructed in the case of a structure in which the 3D shape is not determined only by the dimensions. There is a problem.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a drawing creation apparatus and a drawing creation method capable of easily creating a drawing of a floor slab such as a bridge.

  In order to achieve the above object, a drawing creating apparatus according to an aspect of the present invention is a floor slab image obtained by imaging a floor slab to be inspected by an imaging device, and a space arranged on the floor slab A floor slab image acquisition unit that acquires a floor slab image for each, and a first drawing showing the floor slab, the first drawing including at least a schematic rectangular frame information between a plurality of floor slabs The second rectangular frame corresponding to the first drawing is transformed into a shape similar to the first rectangular frame by the drawing obtaining unit and the first rectangular frame obtained from the floor slab image, Acquire actual size information of the reference subject in at least one floor slab image of the floor slab image acquired by the floor slab image acquired by the floor slab image acquisition unit and a drawing correction unit that corrects one drawing to the second drawing The actual size information acquisition unit that acquires the actual size information of the floor slab based on the acquired actual size information , Comprising a.

  According to one aspect of the present invention, a floor slab image obtained by capturing an image of a floor slab to be inspected and acquiring a floor slab image arranged for each floor is acquired. The inspection of the floor slab is usually performed in units of spaces, and the floor slab image taken in the inspection work is used for creating a drawing of the floor slab. Moreover, the 1st drawing which shows a floor slab is acquired. The first drawing may be a schematic drawing of a floor slab and may include outline rectangular frame information (for example, the number, arrangement, and general dimensions of the case). Such a first drawing does not require measurement of a floor slab and can be easily prepared. As the first drawing, when a floor slab drawing exists, the drawing may be the drawing, and the accuracy of the drawing does not matter.

  Then, the rectangular frame (second rectangular frame) corresponding to the first drawing is deformed by the rectangular frame (first rectangular frame) obtained from the acquired floor slab image, and the first The drawing is modified to a second drawing. The deformation of the second rectangular frame is performed so as to be similar to the first rectangular frame. The corrected second drawing reflects the shape of the floor slab (space) to be inspected, but does not have actual size information. As the actual size information of the second drawing, the actual size information of the reference subject in the floor slab image is acquired, and the actual size information of the floor slab is acquired based on the acquired actual size information. Thereby, the floor slab drawing (second drawing) and the actual size information can be acquired (that is, the floor slab drawing can be easily created).

  In the drawing creation apparatus according to another aspect of the present invention, the floor slab image acquisition unit acquires a plurality of divided images captured by dividing the space into a plurality of times by the imaging device, and combines the acquired plurality of divided images. Thus, it is preferable to acquire one floor slab image for each space.

  In order to accurately measure a damaged portion such as a crack of the floor slab based on the floor slab image, it is necessary to divide the space into multiple times and take an image. In other words, it is necessary to make a single imaging region narrower than the space and capture images at a resolution required for measurement accuracy such as cracks. On the other hand, a damaged part such as a crack is measured in units of a case, so an image in units of a case is necessary. Therefore, by synthesizing images (divided images) captured by dividing the space into a plurality of times, one floor slab image is acquired for each space.

  The drawing creation apparatus according to still another aspect of the present invention has a conversion unit that performs projective conversion of a floor slab image acquired by imaging a floor slab by an imaging device, and the floor slab image acquisition unit performs projective conversion by the conversion unit. It is preferable to obtain the obtained floor slab image. Although it is preferable to image the floor slab directly, there may be cases where the floor slab cannot be imaged due to the presence of an obstacle or the like. Therefore, in the case of a floor slab image captured without facing the floor slab, the floor slab image is projectively transformed to accurately reflect the shape of the floor slab as with the floor slab image captured facing the floor. Make the image.

  In the drawing creating apparatus according to still another aspect of the present invention, a display unit that displays the acquired floor slab image for each case and the acquired first drawing, the floor slab image displayed on the display unit, and the first A manual operation unit for operating the drawing, wherein the drawing correction unit is configured to interpose the floor slab image displayed on the display unit corresponding to the floor slab image in the first drawing displayed on the display unit. An allocation unit that is moved and manually assigned by a manual operation unit, and a second corresponding space in the first drawing along a first rectangular frame that indicates a space between floor slab images allocated by the allocation unit. It is preferable to have an alignment unit that matches the rectangular frame by manual operation by the manual operation unit.

  According to still another aspect of the present invention, the assigning unit of the drawing correcting unit assigns (links) the floor slab image obtained by imaging to the corresponding space in the first drawing showing the floor slab. In addition, the alignment unit aligns the rectangular frame (second rectangular frame) corresponding to the first drawing with the rectangular frame (first rectangular frame) indicating the space of the floor slab image. In particular, the allocation by the allocation unit and the alignment by the alignment unit are performed by the manual operation unit while looking at the floor slab image displayed on the display unit and the first drawing showing the floor slab. Is done.

  In the drawing creating apparatus according to still another aspect of the present invention, the drawing correction unit automatically assigns the acquired floor slab image for each space to a space corresponding to the floor slab image in the first drawing. And a first rectangular frame indicating the space between the floor slab images assigned by the assigning unit is recognized by image processing, and the corresponding first rank frame of the first drawing is recognized based on the recognized first rectangular frame. It is preferable to have an alignment unit that automatically matches the two rectangular frames with the first rectangular frame.

  According to still another aspect of the present invention, the assigning unit of the drawing correcting unit automatically assigns the floor slab image obtained by imaging to the corresponding space in the first drawing. In some cases, the floor slab image obtained by taking an image may already be associated with information indicating which of the floor slab images corresponds to the floor slab drawing. Can be assigned. The alignment unit of the drawing correction unit recognizes the first rectangular frame indicating the space between the assigned floor slab images by image processing, and the recognized first rectangular frame corresponds to the case corresponding to the first drawing. The second rectangular frame between them is automatically matched (deformed).

  In the drawing creating apparatus according to still another aspect of the present invention, a display unit that displays the acquired floor slab image for each case and the acquired first drawing, and the floor slab image displayed on the display unit are operated. A manual operation unit, and the drawing correction unit manually converts the floor slab image displayed on the display unit to a floor corresponding to the floor slab image in the first drawing displayed on the display unit. An allocation unit that is moved and assigned by operation, and a first rectangular frame that indicates a space between floor slab images allocated by the allocation unit is recognized by image processing, and the first drawing is based on the recognized first rectangular frame. It is preferable to have an alignment unit that automatically matches the second rectangular frame between the corresponding spaces of the first and second rectangular frames.

  According to still another aspect of the present invention, the allocation by the allocation unit of the drawing correction unit is performed by the manual operation unit while looking at the floor slab image for each space displayed on the display unit and the first drawing of the floor slab. The alignment by the alignment unit of the drawing correction unit is automatically performed by image processing.

  In the drawing creating apparatus according to still another aspect of the present invention, the reference subject in the floor slab image is a damaged part in the space, and the actual size information acquiring unit acquires the floor slab image acquired by the floor slab image acquiring unit. It is preferable that the actual size information on the damaged part is acquired from the above and the actual size information on the floor slab is calculated based on the acquired actual size information. The actual size of the damaged part in the floor slab image is usually measured at the time of inspection. And by acquiring the actual size information indicating the actual size size of the measured damaged part, the relationship between the actual size size of the damaged part and the image size of the damaged part of the floor slab image can be obtained. The actual size information can be calculated.

  In the drawing creating apparatus according to still another aspect of the present invention, the reference subject in the floor slab image is an edge portion indicating at least one side of the case, and the actual size information acquisition unit is acquired by the floor slab image acquisition unit. It is preferable to acquire the actual size information of the edge indicating at least one side of the case from the floor slab image, and calculate the actual size information of the floor slab based on the acquired actual size information. By obtaining the actual size information of the edge that indicates at least one side of the space included in the floor image, the actual size information of the space can be obtained, and as a result, the actual size of the floor plate in which multiple spaces are arranged Size information can be calculated.

  In the drawing creating apparatus according to still another aspect of the present invention, it is preferable to include an actual size information adding unit that adds the actual size information of the floor slab acquired by the actual size information acquiring unit to the second drawing.

  In the drawing creating apparatus according to still another aspect of the present invention, a trimming unit that cuts out a border image along a first rectangular frame from a floor slab image for each space acquired by the floor slab image acquisition unit, and a trimming unit It is preferable to further include a floor slab image generation unit that connects the cut out space images and generates the entire floor slab image of the floor slab. Thereby, it is possible to generate a floor slab image of the entire floor slab while creating a drawing of the floor slab.

  A drawing creation method according to still another aspect of the present invention is a floor slab image obtained by capturing an image of a floor slab to be inspected by an imaging device, wherein floor slab images arranged for each floor are displayed. A step of acquiring, a first drawing showing a floor slab, the step of acquiring a first drawing including at least a rough rectangular frame information between a plurality of cases of the floor slab, and a case obtained from the floor slab image A second rectangular frame corresponding to the first drawing is deformed to be similar to the first rectangular frame by the first rectangular frame in between, and the first drawing is modified to the second drawing. And acquiring the actual size information of the reference subject in at least one floor slab image of the acquired floor slab images for each space, and acquiring the actual size information of the floor slab based on the acquired actual size information And including.

  In the drawing creation method according to still another aspect of the present invention, the step of acquiring the floor slab image includes acquiring a plurality of divided images obtained by dividing the space into a plurality of times by the imaging device and acquiring the plurality of divided images. It is preferable to combine the images and acquire one floor slab image for each space.

  In the drawing creation method according to still another aspect of the present invention, it is preferable to include a step of adding the acquired actual size information of the floor slab to the second drawing.

  According to the present invention, a rough rectangular frame between a plurality of floor slabs using information on a floor slab image for each space (rectangular frame of a space image) used for inspection of a floor slab such as a bridge. By correcting the drawing containing information (first drawing) and giving the actual size information of the reference object in the floor slab image, the shape and size of the floor slab do not exist or even if it exists Even if it is inaccurate, an accurate floor slab drawing (second drawing) can be created.

1 is a block diagram showing a first embodiment of a drawing creation apparatus according to the present invention. The figure which shows an example of the 1st drawing which shows the floor slab image displayed on the screen of the display part 52, and a floor slab The figure which shows an example of drawing 200 which shows the floor slab image 100 displayed on the screen of the display part 52, and a floor slab. The figure which shows the floor slab image 100 shown in FIG. The block diagram which shows 2nd Embodiment of the drawing production apparatus which concerns on this invention. The figure which shows the floor slab image 200-2 which carried out projective transformation of the floor slab image 200-1 imaged without facing a floor slab, and the floor slab image 200-1 The figure which shows a mode that the one floor slab image 304 containing one space image is synthesize | combined from the three divided images 301, 302, and 303. FIG. The block diagram which shows 3rd Embodiment of the drawing creation apparatus which concerns on this invention. The flowchart which shows embodiment of the drawing preparation method concerning this invention

  Embodiments of a drawing creation apparatus and a drawing creation method according to the present invention will be described below with reference to the accompanying drawings.

[Drawing creation device]
<First Embodiment>
FIG. 1 is a block diagram showing a first embodiment of a drawing creation apparatus according to the present invention.

  As shown in FIG. 1, the drawing creation device 1-1 is a device that creates a drawing of a floor slab such as a bridge, and mainly includes an image input unit 12, an image DB (DB) 14, a floor slab image acquisition unit 20, The drawing correction unit 30, the drawing input unit 40, the drawing DB 42, the drawing acquisition unit 44, the manual operation unit 50, the display unit 52, the actual size information acquisition unit 60, and the actual size information addition unit 70 are configured.

  The drawing creating apparatus 1-1 is configured by, for example, a personal computer (PC), the image input unit 12 corresponds to an input interface of the PC, and the image DB 14 and the drawing DB 42 are one or more hard disks of the PC. It corresponds to a device. The floor slab image acquisition unit 20, the drawing correction unit 30, the drawing acquisition unit 44, the actual size information acquisition unit 60, and the actual size information addition unit 70 include one or more CPUs (Central Processing Units) of the PC and the working of the CPU. It is composed of a memory and a drawing creation program stored in a hard disk device or the like and expanded on the memory. The CPU executes the drawing creation program and functions as each unit. The drawing input unit 40 and the manual operation unit 50 correspond to a PC mouse and / or keyboard, respectively, and the display unit 52 corresponds to a PC monitor device.

  Here, the bridge is provided in the direction orthogonal to the main girder that is passed between the abutment and the pier, and the main girder that is provided in the longitudinal direction of the bridge. In order to resist lateral loads, etc., it is composed of various members including a tilting structure and a horizontal structure that mutually connect the main girders, and a floor slab for driving vehicles etc. is hit on the upper part of the main girders etc. It is installed. The floor slab is generally made of reinforced concrete.

  The floor slab is usually composed of a rectangular space defined by the main girder and cross girder, and damage to the floor slab (cracking, free lime, peeling of concrete, rebar exposure, etc.) When checking, it is done in units of gaps.

  In FIG. 1, an image input unit 12 is a part for inputting image data or the like from an external device via short-range wireless communication, a cable or a network connected to the external device, and in this example, is an inspection target for a bridge. Image data indicating a floor slab image is input from the imaging device 10 that captured the floor slab at the same time for each imaging or after a plurality of floor slab images (a plurality of portions of floor slab images) have been imaged. The image input unit 12 may be a card reader that reads image data from a memory card of the imaging device 10.

  The imaging device 10 preferably includes a global positioning system (GPS) (hereinafter referred to as “GPS device”). The imaging device 10 including the GPS device acquires position information (GPS information) specified by the current latitude, longitude, and altitude of the imaging device 10 by the GPS device, and attaches the GPS information to the image file of the captured image. Can be added as The GPS information can be used for associating an image obtained by capturing a floor slab with an actual bridge floor slab (space).

  Image data indicating the floor slab image input from the imaging device 10 via the image input unit 12 is stored in the image DB 14 and managed therein.

  The floor slab image acquisition unit 20 acquires image data indicating a floor slab image for each case from the image DB 14, and outputs the acquired image data to the drawing correction unit 30. Here, it is preferable that the floor slab image acquisition unit 20 acquires the image data indicating the floor slab image for each case according to the order associated with the arrangement order of the cases. In this case, when the file names of the image files are associated with the arrangement order of the cases, the image files (image data indicating the floor slab image) can be sequentially read from the image DB 14 based on the file names. . Further, since the GPS information added to the image file corresponds to the shooting position for each case, image data to be read from the image DB 14 can be determined based on the GPS information.

  The floor slab image acquisition unit 20 of this example acquires image data indicating a floor slab image from the image DB 14, but may acquire it directly from an image recording unit (memory card) of the imaging device 10. .

  The drawing input unit 40 is a part for inputting drawing information indicating the first drawing including rough rectangular frame information of a plurality of floor slabs. For example, the number of bridges in the longitudinal direction of the bridge, and the bridge Enter the number of cases in the width direction. In addition, the outline rectangular frame information of the plurality of cases of the floor slab is, for example, the size information of the case (a plurality of pieces of the case where the shape of the case is a rectangle and the length of the short side and the long side of the case is indicated) Common size information) can be included. For the size information included in the outline rectangular frame information of the case, appropriate size information may be manually input by the drawing input unit 40, or preset size information (for example, 3 m × 5 m). )

  The floor plan drawing (first drawing) is determined from the number of bridges in the longitudinal direction of the bridge, the number of bridges in the width direction of the bridge, and approximate rectangular frame information of the bridge. This first drawing is not a drawing showing the actual shape and actual size of the floor slab, but a schematic drawing. That is, since the size information of the case is not the actual size information, the size information included in the first drawing is not the actual size information, and the shape of the plurality of cases of the actual floor slab is not uniform. The shape of the floor slab included in the first drawing is not the actual shape of the floor slab.

  The drawing DB 42 is a part that stores and manages drawings (CAD (computer-aided design) drawings) of a plurality of bridges (including floor slabs). In the drawing DB 42, the drawing of the bridge to be inspected is not always managed. In the case of an old bridge, the drawing may be scattered, and the managed drawing may be inaccurate. .

  The drawing acquisition unit 44 acquires the first drawing of the floor slab to be inspected input by the drawing input unit 40 or the drawing of the floor slab to be inspected from the drawings managed by the drawing DB 42 ( 1st drawing) is acquired. When the first drawing of the floor slab to be inspected exists in the drawing DB 42, the drawing acquisition unit 44 preferably acquires the first drawing existing in the drawing DB 42 with priority.

  The first drawing of the floor slab to be inspected acquired by the drawing acquisition unit 44 is output to the drawing correction unit 30.

  The drawing correction unit 30 is a part that corrects the first drawing of the floor slab input from the drawing acquisition unit 44 by using the information of the floor slab image for each case, and includes the assignment unit 32 and the alignment unit 34. I have.

  The drawing correcting unit 30 displays the floor slab image on the display unit 52 based on the image data indicating the floor slab image for each case input from the floor slab image acquiring unit 20 and the first input from the drawing acquiring unit 44. It has a function as a display control part which displays the drawing which shows a floor slab on the display part 52 based on drawing data which shows these drawings.

  FIG. 2 is a diagram illustrating an example of the first drawing showing the floor slab image and the floor slab displayed on the screen of the display unit 52.

  In FIG. 2, a floor slab image 100 includes images 102 and 104 showing a part of a main girder, images 112 and 114 showing a part of a horizontal girder, and a part of a floor slab (a main girder and a horizontal girder). The image of a defined space) (space image) 120 is included.

  Here, the rectangular frame (first rectangular frame) indicating the space of the floor slab image 100 corresponds to the rectangular outline of the space image 120, and a plane indicating the floor slab of the floor slab image 100 and the main digit are represented. The contours defined by the intersecting lines (four intersecting lines) of the planes of the main girders of the images 102 and 104 shown and the planes of the horizontal girders of the images 112 and 114 showing the horizontal girders.

  In FIG. 2, a floor slab drawing 200 indicated by a dotted line is a first drawing before correction, and in this example, corresponds to three main girders and five horizontal girders. Mg01 to Mg03 are member numbers of main beams (Mg: Main girder), and Cr01 to Cr05 are respectively member numbers of horizontal beams (Cr: Cross beam). If the entire floor deck drawing of the bridge cannot be displayed properly on one screen (when the total length of the bridge is long), it is possible to display a partial drawing of the floor slab and scroll the floor plan drawing. It is preferable to do so.

  The assigning unit 32 of the drawing correcting unit 30 is a part that assigns (links) the inputted floor slab image 100 to a space corresponding to the floor slab image 100 in the drawing 200. In this example, when the screen shown in FIG. 2 is used and the operation of moving the floor slab image 100 to the rectangular frame corresponding to the floor slab image 100 in the drawing 200 is performed by the manual operation unit 50, The unit 32 assigns the floor slab image 100 to a space in the drawing 200 of the movement destination.

  The alignment unit 34 of the drawing correction unit 30 corresponds to the rectangular frame corresponding to the drawing 200 along the rectangular frame (first rectangular frame) indicating the space of the floor slab image 100 assigned by the assignment unit 32. The second rectangular frame corresponding to the first drawing is deformed by a manual operation by the manual operation unit 50, and the second rectangular frame corresponding to the first drawing is converted to the floor slab image 100. It is made to correspond to the 1st rectangular frame which shows the case of no. Further, the alignment unit 34 is manually operated by the manual operation unit 50 so as to match the first rectangular frame indicating the space of the floor slab image 100 with the second rectangular frame corresponding to the corresponding space in the first drawing. The floor slab image 100 can be translated or rotated by an operation.

  FIG. 3 is a diagram showing an example of the floor slab image 100 displayed on the screen of the display unit 52 and a drawing 200 showing the floor slab. In particular, the position of the floor slab image 100 corresponding to the floor slab drawing 200 is shown. FIG. 3 is an enlarged view (enlarged main part of FIG. 2) based on the floor slab image 100 after being moved to.

  The screen shown in FIG. 3 displays a movement button 150 indicating translational movement and a rotation button 152 indicating rotational movement. The manual operation unit 50 moves a cursor (not shown) to the movement button 150 or the rotation button 152. By selecting (clicking) the movement button 150 or the rotation button 152, the floor slab image or the drawing in the screen can be translated or rotated.

  For example, after selecting the move button 150, the floor slab image or drawing line can be translated by dragging the floor slab image or drawing line. After selecting the rotation button 152, the floor slab image or drawing line can be translated. By dragging the line in the rotation direction, the floor slab image or the line in the drawing can be rotated.

  In FIG. 3, one short side 120A of the first rectangular frame corresponding to the outline of the space image 120 matches the horizontal beam (the horizontal beam corresponding to the member number Cr01) in the drawing showing the floor slab. It shows about the case. For example, when the floor slab image 100 is translated and rotated by an operation on the manual operation unit 50, one short side 120A of the first rectangular frame corresponding to the outline of the space image 120 and the floor slab are shown. It is possible to match the corresponding side of the case (the horizontal beam corresponding to the member number Cr01).

  On the other hand, in FIG. 3, the other three sides (sides indicated by reference numerals 120B, 120C, and 120D) of the first rectangular frame corresponding to the contour of the border image 120 and the corresponding spacing in the drawing showing the floor slab Are not coincident with each other (a side indicating a main beam corresponding to the member number Mg01, a horizontal beam corresponding to the member number Cr01, and a main beam corresponding to Mg02). This is because the first drawing showing the floor slab is a schematic drawing.

  In FIG. 3, when the drawing of the main digit corresponding to the member number Mg01 is matched with the frame (side 120B) corresponding to the main digit in the first rectangular frame of the case image 120 (when corrected). Drag the drawing line corresponding to the main digit in the rotation direction to rotate it. Similarly, the drawing of the main digit corresponding to the member number Mg02 and the horizontal corresponding to the member number Cr02 are obtained by translating and / or rotating the line of the drawing corresponding to the first drawing by the manual operation unit 50. The drawing of the digits can be matched to the sides 120D and 120C of the first rectangular frame of the case image 120, respectively.

  In this way, the second rectangular frame can be obtained by placing the corresponding rectangular frame (second rectangular frame) in the first drawing along the first rectangular frame obtained from the floor slab image. It is deformed into a similar shape to the first rectangular frame.

  In the drawing correction unit 30, when image data indicating a floor slab image for each space is newly input from the floor slab image acquisition unit 20, the floor slab image for each space is displayed as shown in FIGS. The second rectangular frame corresponding to the first drawing is assigned by the first rectangular frame assigned to the space corresponding to the floor slab image in the first drawing, and the first rectangular frame obtained from the floor slab image. It is deformed into a similar shape to the first rectangular frame.

  All the floor slab images are input, and when the second rectangular frame of all the spaces in the first drawing is deformed using the input floor slab image, the shape of the entire floor slab is determined. . Therefore, the drawing correction unit 30 can acquire the corrected drawing (second drawing) by correcting the first drawing using the floor slab image.

  Note that the second drawing after correction reflects the actual shape of the floor slab (space), but does not have actual size information.

  In FIG. 1, the actual size information acquisition unit 60 acquires the actual size size information 54 of the reference subject in at least one floor slab image of the floor slab images acquired by the floor slab image acquisition unit 20, Based on the acquired actual size information, the actual size information of the floor slab (second drawing) is acquired.

  FIG. 4 is a diagram showing the floor slab image 100 shown in FIG. As shown in FIG. 4, the reference object in the floor slab image 100 is a damaged portion (crack 160, free lime 170, etc.) in the case measured from the case image 120, or a case measured from the case image 120. It is an edge part which shows at least one side (for example, the short side of a 1st rectangular frame) of a space | interval (1st rectangular frame of a case).

  The actual size information acquisition unit 60 acquires the actual size information 54 of at least one of the reference subjects by manual input. The actual size information (crack length) of the crack 160 in the space and the vertical and horizontal lengths of the free lime 170 can use the actual size information measured at the time of inspection of the floor slab.

  From the floor slab image 100 displayed on the display unit 52 and the actual size information 54 of the reference subject in the floor slab image 100, the actual size per pixel pitch of the screen of the display unit 52 can be obtained. Accordingly, the actual size information acquisition unit 60 determines the floor slab (the corrected second size) based on the screen size of the first drawing displayed on the display unit 52 and the actual size per pixel pitch of the screen. (Actual drawing) can be calculated (obtained).

  The actual size information adding unit 70 adds the actual size information acquired by the actual size information acquiring unit 60 to the second drawing corrected by the drawing correcting unit 30. The actual size information is added by the actual size information adding unit 70 by adding the actual size information in the second drawing or associating the text file in which the actual size information is recorded with the drawing file of the second drawing. Can be performed.

  The second drawing to which the actual size information is added by the actual size information adding unit 70 is stored in the drawing DB 42 and used as appropriate.

<Second Embodiment>
FIG. 5 is a block diagram showing a second embodiment of the drawing creation apparatus according to the present invention. In FIG. 5, the same reference numerals are given to the portions common to the first embodiment shown in FIG. 1, and the detailed description thereof is omitted.

  The drawing creating apparatus 1-2 according to the second embodiment illustrated in FIG. 5 includes a conversion unit 16, a trimming unit 22, and a floor slab image generation unit 24 added to the first embodiment illustrated in FIG. And it differs in the point from which the functions of the floor slab image acquisition part 20-2 and the drawing correction part 30-2 differ.

  The conversion unit 16 performs projective conversion of the floor slab image input from the image DB 14 and outputs the floor slab image subjected to the projective conversion to the floor slab image acquisition unit 20-2.

  The floor slab image input from the image DB 14 is not necessarily an image captured in front of the floor slab. When the input floor slab image is a floor slab image captured without facing the floor slab, the conversion unit 16 performs projective transformation on the floor slab image, Convert to a similar image.

  A floor slab image 200-1 illustrated in FIG. 6 illustrates an example of a floor slab image captured without facing the floor slab. When the shape of the space between the floor slabs is originally a rectangle, the first rectangular frame of the space obtained from the floor slab image captured without facing directly does not become a rectangle. In this case, the conversion unit 16 performs projective transformation on the floor slab image 200-1 and obtains a floor slab image 200-2 in which the case image (first rectangular frame of the case is a rectangle) as shown in FIG. To do.

  In order to projectively transform the floor slab image 200-1 so as to become the floor slab image 200-2, an angle formed between the normal direction of the floor slab plane and the imaging direction of the imaging device 10 (the direction of the optical axis). Need to be detected.

  Now, assuming that the plane of the floor slab is horizontal, the orientation information indicating the imaging direction of the imaging device 10 is acquired, thereby detecting the angle formed by the normal direction of the plane of the floor slab and the imaging direction of the imaging device 10. be able to. The azimuth information indicating the shooting direction of the imaging apparatus 10 can be acquired by an azimuth sensor mounted on the imaging apparatus 10, and the acquired azimuth information can be added to the image file. The direction sensor can be constituted by a gyro sensor, a geomagnetic sensor, or the like.

  In addition, when there is a member having a known shape (parallelogram, regular polygon, perfect circle, etc.) in the floor slab image, the known shape of the member and the shape of the corresponding member in the floor slab image Thus, a projective transformation parameter for projective transformation can be obtained. In the case of this example, the flange portions of the main girder and the cross beam facing the floor slab are parallel to each other. Therefore, when the flange portions in the floor slab image are not parallel, it is only necessary to obtain projective transformation parameters for projective transformation so that all the flange portions are parallel, and perform the projective transformation.

  The floor slab image acquisition unit 20-2 includes an image synthesis unit, and when a plurality of divided images obtained by dividing one space into a plurality of times are acquired, the image synthesis unit synthesizes the plurality of divided images. Then, one floor slab image is acquired for each case.

  FIG. 7 is a diagram illustrating a state in which one floor slab image 304 including one frame image is synthesized (panoramic composition) from the three divided images 301, 302, and 303.

  The image composition unit is configured so that the feature points (the contour lines of the members, the pattern of the floor slab, the dirt, the damaged portions, etc.) of the overlapping areas (areas indicated by oblique lines) of the divided images 301, 302, and 303 match. Next, enlargement / reduction and alignment between the divided images are performed to synthesize the divided images. The number of divided images is not limited to the embodiment shown in FIG.

  The trimming unit 22 is a part that cuts out a case image along a first rectangular frame indicating a case from the inputted floor slab image, and outputs the cut out case image to the drawing correction unit 30-2. The first rectangular frame indicating the space corresponds to the contour of the space image (the contour inside the main and horizontal beams), and can be recognized by image processing the floor slab image. Therefore, the trimming unit 22 can automatically recognize the outline of the case image from the floor slab image and automatically cut out the case image. The floor slab image is displayed on the display unit 52, the user designates the outline (trimming frame) of the border image on the screen of the display unit 52, and the trimming unit 22 moves the gap along the designated trimming frame. The image may be cut out.

  In the drawing correction unit 30-2, the alignment unit 34-2 sets the second rectangular frame corresponding to the first drawing in the first rectangular frame based on the first rectangular frame indicating the space of the floor slab image. This is different from the drawing correcting unit 30 of the first embodiment in that it automatically matches the rectangular frame.

  That is, the alignment unit 34-2 of the drawing correction unit 30-2 recognizes the first rectangular frame indicating the space of the input floor slab image by image processing. In the case of this example, since the drawing correction unit 30-2 inputs the image of the case, the first rectangular frame indicating the case can be automatically acquired by recognizing the outline of the outer shape of the case image. .

  The alignment unit 34-2 has a gap with respect to the first drawing so that one side of the first rectangular frame indicating the recognized gap coincides with one side of the corresponding case in the first drawing. The alignment of the images is automatically performed, and then the lines constituting the second rectangular frame corresponding to the first drawing are translated and / or moved with respect to the other three sides of the first rectangular frame. Alternatively, it is rotated and the alignment is performed automatically.

  In this example, the drawing correction unit 30-2 inputs the case image. However, when the floor slab image including the case image is input, the alignment unit 34-2 also includes the floor slab image. The second rectangular frame corresponding to the first drawing is automatically matched with the first rectangular frame based on the recognized first rectangular frame. it can.

  The floor slab image generation unit 24 is a space image used for creating a drawing in the drawing correction unit 30-2, and is assigned to the corresponding space of the first drawing and the position information that has been aligned. The frame images having are connected to generate a floor slab image of the entire floor slab. The floor slab image of the entire floor slab generated by the floor slab image generating unit 24 is stored in the image DB 14. The floor slab image stored in the image DB 14 is preferably stored in association with the floor slab drawing corresponding to the floor slab image stored in the drawing DB 42.

<Third Embodiment>
FIG. 8 is a block diagram showing a third embodiment of the drawing creation apparatus according to the present invention. In FIG. 8, the same reference numerals are given to portions common to the first embodiment and the second embodiment shown in FIGS. 1 and 5, and detailed description thereof is omitted.

  The drawing creating apparatus 1-3 of the third embodiment shown in FIG. 8 is mainly different from the first embodiment and the second embodiment in the drawing correcting unit 30-3.

  The drawing correction unit 30-3 includes an allocation unit 32-2 and an alignment unit 34-2. The assigning unit 32-2 of the drawing correcting unit 30-3 is a part for assigning the gap image input from the trimming unit 22 to the gap corresponding to the gap image in the first drawing, and is automatically assigned in particular. This is different from the assignment unit 32 of the first and second embodiments.

  In some cases, the floor slab image (spatial image) captured by the imaging device 10 is already associated with information indicating which of the floor slab images corresponds to the floor slab image. . The assigning unit 32-2 automatically assigns the entered case image to the case corresponding to the case image in the first drawing, using information associated with the case image.

  The alignment unit 34-2 uses the gap image automatically assigned by the assignment unit 32-2, and in the first rectangular frame of the gap image in the first drawing as in the second embodiment. The second rectangular frame between the corresponding cases is automatically matched (deformed).

  Since the drawing correction unit 30-3 of the third embodiment automatically assigns a case image and corrects the first drawing, the drawing creating apparatus 1-3 of the third embodiment includes The manual operation unit 50 and the display unit 52 that are required in the first embodiment are not provided.

  Note that the drawing correction unit 30-3 of this example inputs the case image from the trimming unit 22, but when inputting a floor slab image including the case image, the assignment of the case image and the second image are also performed. Each of the drawings can be automatically corrected.

[Drawing method]
FIG. 9 is a flowchart showing an embodiment of a drawing creation method according to the present invention.

  In FIG. 9, the floor slab image acquisition unit 20-2 (FIG. 5) acquires a plurality of divided images captured by dividing one space into a plurality of times (step S <b> 10), and acquires the acquired plurality of divided images. Compositing and creating (acquiring) one floor slab image for each case (step S12).

  The drawing acquisition unit 44 acquires the first drawing of the floor slab to be inspected input by the drawing input unit 40 or the drawing of the floor slab to be inspected from the drawings managed by the drawing DB 42 ( The first drawing is acquired (step S14).

  Drawing correction part 30 (Drawing 1) corrects the 1st drawing acquired at Step S14 to the 2nd drawing using the floor slab image acquired at Step S12 (Step S16). That is, the drawing correcting unit 30 assigns the floor slab image to a case corresponding to the floor slab image in the first drawing, and follows the first rectangular frame indicating the space of the assigned floor slab image along the first rectangular frame. Correction (alignment) is performed to match the second rectangular frame between the corresponding cases of one drawing.

  On the other hand, the actual size information acquisition unit 60 calculates the actual size information of the floor slab (second drawing after correction) based on the actual size information of the reference subject such as a crack in the floor slab image (step S18).

  The actual size information adding unit 70 adds the actual size information of the floor slab calculated in step S18 to the corrected second drawing acquired in step S16 (step S20).

  The floor plan drawing created in this way is converted into electronic data or printed out, and can be used for maintenance inspection of the bridge floor slab and movement control of the automatic photographing robot.

  Needless to say, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention by appropriately combining the configurations of the respective embodiments.

1-1, 1-2, 1-3 Drawing creation device 10 Imaging device 12 Image input unit 14 Image DB
16 conversion unit 20, 20-2 floor slab image acquisition unit 22 trimming unit 24 floor slab image generation unit 30, 30-2, 30-3 drawing correction unit 32, 32-2 allocation unit 34, 34-2 alignment unit 40 Drawing input unit 42 Drawing DB
44 Drawing acquisition unit 50 Manual operation unit 52 Display unit 54 Actual size information 60 Actual size information acquisition unit 70 Actual size information addition unit 100, 200-1, 200-2, 304 Floor slab image 120 Space image 150 Move button 152 Rotation Button 160 Crack 170 Free lime 200 Drawing 301, 302, 303 Split image S10-S20 Step

Claims (13)

A floor slab image obtained by imaging a floor slab to be inspected by an imaging device, and acquiring a floor slab image for each space arranged on the floor slab,
A first drawing showing the floor slab, wherein the drawing obtaining unit obtains a first drawing including at least a schematic rectangular frame information of a plurality of spaces of the floor slab;
The first rectangular frame obtained from the floor slab image is transformed into a shape similar to the first rectangular frame by deforming the second rectangular frame corresponding to the first drawing, and the first rectangular frame. A drawing correction section for correcting the drawing of FIG.
The actual sizing information of the reference subject in at least one floor slab image of the floor slab images acquired by the floor slab image acquiring unit is acquired, and the floor slab is based on the acquired actual size information. The actual size information acquisition unit for acquiring the actual size information,
A drawing creation device.   The floor slab image acquisition unit acquires a plurality of divided images captured by dividing the space into a plurality of times by the imaging device, synthesizes the acquired plurality of divided images, one sheet for each space The drawing creation apparatus according to claim 1, wherein a floor slab image is acquired. A conversion unit that performs projective conversion of a floor slab image obtained by imaging the floor slab with the imaging device;
The drawing creation apparatus according to claim 1, wherein the floor slab image acquisition unit acquires the floor slab image that has undergone projective conversion by the conversion unit. A display unit that displays the acquired floor slab image for each space and the acquired first drawing, and a manual operation that operates the floor slab image displayed on the display unit and the first drawing. And comprising
The drawing correction unit includes:
Allocation by assigning the floor slab image displayed on the display unit to a space corresponding to the floor slab image in the first drawing displayed on the display unit by manual operation by the manual operation unit And
Along with the first rectangular frame indicating the space of the floor slab image assigned by the assigning unit, a second rectangular frame corresponding to the corresponding case in the first drawing is manually operated by the manual operating unit. An alignment portion to be matched,
The drawing creation apparatus according to any one of claims 1 to 3. The drawing correction unit includes:
An assigning unit that automatically assigns the acquired floor slab image for each space, to a space corresponding to the floor slab image in the first drawing;
The first rectangular frame indicating the space of the floor slab image assigned by the assigning unit is recognized by image processing, and the corresponding space of the first drawing is based on the recognized first rectangular frame. An alignment unit that automatically matches the second rectangular frame to the first rectangular frame;
The drawing creation apparatus according to any one of claims 1 to 3. A display unit that displays the acquired floor slab image for each of the spaces and the acquired first drawing; and a manual operation unit that operates the floor slab image displayed on the display unit,
The drawing correction unit includes:
Allocation by assigning the floor slab image displayed on the display unit to a space corresponding to the floor slab image in the first drawing displayed on the display unit by manual operation by the manual operation unit And
The first rectangular frame indicating the space of the floor slab image assigned by the assigning unit is recognized by image processing, and the corresponding space of the first drawing is based on the recognized first rectangular frame. An alignment unit that automatically matches the second rectangular frame to the first rectangular frame;
The drawing creation apparatus according to any one of claims 1 to 3. The reference subject in the floor slab image is a damaged portion in the space,
The actual size information acquisition unit acquires actual size information of the damaged portion from the floor slab image acquired by the floor slab image acquisition unit, and the actual size information of the floor slab based on the acquired actual size information The drawing creating apparatus according to claim 1, which calculates The reference subject in the floor slab image is an edge portion indicating at least one side of the case,
The actual size information acquisition unit acquires actual size information of an edge indicating at least one side of the case from the floor slab image acquired by the floor slab image acquisition unit, and based on the acquired actual size information The drawing creation device according to claim 1, wherein the actual size information of the floor slab is calculated.   The drawing creation apparatus according to claim 1, further comprising an actual size information adding unit that adds the actual size information of the floor slab acquired by the actual size information acquiring unit to the second drawing. . A trimming unit that cuts out a border image along the first rectangular frame from the floor slab image for each space acquired by the floor slab image acquiring unit;
A floor slab image generating unit that connects the space images cut out by the trimming unit, and generates a whole floor slab image of the floor slab;
The drawing creation apparatus according to claim 1, further comprising: A floor slab image obtained by imaging a floor slab to be inspected by an imaging device, and acquiring a floor slab image for each space arranged in the floor slab;
A first drawing showing the floor slab, wherein the first drawing includes at least a schematic rectangular frame information of a plurality of spaces of the floor slab; and
The first rectangular frame obtained from the floor slab image is transformed into a shape similar to the first rectangular frame by deforming the second rectangular frame corresponding to the first drawing, and the first rectangular frame. Modifying the drawing to a second drawing;
The actual size information of the reference subject in at least one floor slab image of the acquired floor slab images is acquired, and the actual size information of the floor slab is acquired based on the acquired actual size information And steps to
A drawing creation method including:   The step of acquiring the floor slab image includes acquiring a plurality of divided images captured by dividing the space into a plurality of times by the imaging device, and combining the acquired plurality of divided images to 1 for each space. The drawing creation method according to claim 11, wherein a single floor slab image is acquired.   The drawing creation method according to claim 11, further comprising a step of adding the acquired actual size information of the floor slab to the second drawing.

Images